/*
 * min_sec.c -- 把秒转换为分钟和秒
 */

#include <stdio.h>
#define SEC_PER_MIN 60
int main(void)
{
    int sec, min, left;
    printf("Convert seconds to minuets and seconds\n");
    printf("Enter the number of seconds (<=0 to quit):\n");
    scanf("%d", &sec);
    while (sec > 0) {
        min = sec / SEC_PER_MIN;
        left = sec % SEC_PER_MIN;
        printf("%d seconds is %d minutes and %d seconds.\n", sec, min, left);
        printf("Enter next value(<-0 to quite):\n");
        scanf("%d", &sec);
    }
     printf("Done\n");
     return 0;
}
